source: trunk/src/scripttools/debugging/qscriptdebuggerlocalswidget.cpp@ 324

Last change on this file since 324 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 14.6 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the QtSCriptTools module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
10** Licensees holding valid Qt Commercial licenses may use this file in
11** accordance with the Qt Commercial License Agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
16** Alternatively, this file may be used under the terms of the GNU Lesser
17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
21** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22**
23** In addition, as a special exception, Nokia gives you certain
24** additional rights. These rights are described in the Nokia Qt LGPL
25** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26** package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you are unsure which license is appropriate for your use, please
37** contact the sales department at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "qscriptdebuggerlocalswidget_p.h"
43#include "qscriptdebuggerlocalswidgetinterface_p_p.h"
44#include "qscriptdebuggerlocalsmodel_p.h"
45#include "qscriptcompletionproviderinterface_p.h"
46#include "qscriptcompletiontaskinterface_p.h"
47
48#include <QtCore/qdebug.h>
49#include <QtGui/qheaderview.h>
50#include <QtGui/qcompleter.h>
51#include <QtGui/qstringlistmodel.h>
52#include <QtGui/qtreeview.h>
53#include <QtGui/qboxlayout.h>
54#include <QtGui/qsortfilterproxymodel.h>
55#include <QtGui/qlineedit.h>
56#include <QtGui/qstyleditemdelegate.h>
57#include <QtGui/qevent.h>
58#include <QtGui/qmessagebox.h>
59#include <QtScript/qscriptengine.h>
60
61QT_BEGIN_NAMESPACE
62
63namespace {
64
65class CustomProxyModel : public QSortFilterProxyModel
66{
67public:
68 CustomProxyModel(QObject *parent = 0)
69 : QSortFilterProxyModel(parent) {}
70
71 bool hasChildren(const QModelIndex &parent) const
72 {
73 QModelIndex sourceParent = mapToSource(parent);
74 if (parent.isValid() && !sourceParent.isValid())
75 return false;
76 return sourceModel()->hasChildren(sourceParent);
77 }
78};
79
80} // namespace
81
82class QScriptDebuggerLocalsWidgetPrivate
83 : public QScriptDebuggerLocalsWidgetInterfacePrivate
84{
85 Q_DECLARE_PUBLIC(QScriptDebuggerLocalsWidget)
86public:
87 QScriptDebuggerLocalsWidgetPrivate();
88 ~QScriptDebuggerLocalsWidgetPrivate();
89
90 void complete(QLineEdit *le);
91
92 // private slots
93 void _q_onCompletionTaskFinished();
94 void _q_insertCompletion(const QString &text);
95 void _q_expandIndex(const QModelIndex &index);
96
97 QTreeView *view;
98 QPointer<QLineEdit> completingEditor;
99 QCompleter *completer;
100 CustomProxyModel *proxy;
101};
102
103QScriptDebuggerLocalsWidgetPrivate::QScriptDebuggerLocalsWidgetPrivate()
104{
105 completingEditor = 0;
106 completer = 0;
107 proxy = 0;
108}
109
110QScriptDebuggerLocalsWidgetPrivate::~QScriptDebuggerLocalsWidgetPrivate()
111{
112}
113
114void QScriptDebuggerLocalsWidgetPrivate::complete(QLineEdit *le)
115{
116 Q_Q(QScriptDebuggerLocalsWidget);
117 QScriptCompletionTaskInterface *task = 0;
118 // ### need to pass the current frame #
119 task = completionProvider->createCompletionTask(
120 le->text(), le->cursorPosition(),
121 q->localsModel()->frameIndex(), /*options=*/0);
122 QObject::connect(task, SIGNAL(finished()),
123 q, SLOT(_q_onCompletionTaskFinished()));
124 completingEditor = le;
125 task->start();
126}
127
128void QScriptDebuggerLocalsWidgetPrivate::_q_onCompletionTaskFinished()
129{
130 Q_Q(QScriptDebuggerLocalsWidget);
131 QScriptCompletionTaskInterface *task = 0;
132 task = qobject_cast<QScriptCompletionTaskInterface*>(q_func()->sender());
133 if (!completingEditor) {
134 task->deleteLater();
135 return;
136 }
137
138 if (task->resultCount() == 1) {
139 // do the completion right away
140 QString completion = task->resultAt(0);
141 completion.append(task->appendix());
142 QString tmp = completingEditor->text();
143 tmp.remove(task->position(), task->length());
144 tmp.insert(task->position(), completion);
145 completingEditor->setText(tmp);
146 completingEditor = 0;
147 } else if (task->resultCount() > 1) {
148 // popup completion
149 if (!completer) {
150 completer = new QCompleter(q);
151 completer->setCompletionMode(QCompleter::PopupCompletion);
152 completer->setCaseSensitivity(Qt::CaseSensitive);
153 completer->setWrapAround(false);
154 QObject::connect(completer, SIGNAL(activated(QString)),
155 q, SLOT(_q_insertCompletion(QString)));
156 }
157 QStringListModel *model = qobject_cast<QStringListModel*>(completer->model());
158 if (!model) {
159 model = new QStringListModel(q);
160 completer->setModel(model);
161 }
162 QStringList strings;
163 for (int i = 0; i < task->resultCount(); ++i)
164 strings.append(task->resultAt(i));
165 model->setStringList(strings);
166 QString prefix = completingEditor->text().mid(task->position(), task->length());
167 completer->setCompletionPrefix(prefix);
168 completingEditor->setCompleter(completer);
169 // we want to handle the insertion ourselves
170 QObject::disconnect(completer, 0, completingEditor, 0);
171 completer->complete();
172 }
173 task->deleteLater();
174}
175
176void QScriptDebuggerLocalsWidgetPrivate::_q_insertCompletion(const QString &text)
177{
178 Q_ASSERT(completingEditor != 0);
179 QString tmp = completingEditor->text();
180 tmp.insert(completingEditor->cursorPosition(), text.mid(completer->completionPrefix().length()));
181 completingEditor->setText(tmp);
182 completingEditor = 0;
183}
184
185void QScriptDebuggerLocalsWidgetPrivate::_q_expandIndex(const QModelIndex &index)
186{
187 view->expand(proxy->mapFromSource(index));
188}
189
190class QScriptDebuggerLocalsItemDelegate
191 : public QStyledItemDelegate
192{
193 Q_OBJECT
194public:
195 QScriptDebuggerLocalsItemDelegate(QObject *parent = 0);
196
197 QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const;
198 void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;
199 void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
200
201 bool eventFilter(QObject *watched, QEvent *event);
202
203private Q_SLOTS:
204 void validateInput(const QString &text)
205 {
206 QWidget *editor = qobject_cast<QWidget*>(sender());
207 QPalette pal = editor->palette();
208 QColor col;
209#if QT_VERSION >= 0x040500
210 bool ok = (QScriptEngine::checkSyntax(text).state() == QScriptSyntaxCheckResult::Valid);
211#else
212 bool ok = true;
213#endif
214 if (ok) {
215 col = Qt::white;
216 } else {
217 QScriptSyntaxCheckResult result = QScriptEngine::checkSyntax(
218 text + QLatin1Char('\n'));
219 if (result.state() == QScriptSyntaxCheckResult::Intermediate)
220 col = QColor(255, 240, 192);
221 else
222 col = QColor(255, 102, 102);
223 }
224 pal.setColor(QPalette::Active, QPalette::Base, col);
225 editor->setPalette(pal);
226 }
227
228private:
229 static const QWidget *widget(const QStyleOptionViewItem &option)
230 {
231 if (const QStyleOptionViewItemV3 *v3 = qstyleoption_cast<const QStyleOptionViewItemV3 *>(&option))
232 return v3->widget;
233 return 0;
234 }
235};
236
237QScriptDebuggerLocalsItemDelegate::QScriptDebuggerLocalsItemDelegate(
238 QObject *parent)
239 : QStyledItemDelegate(parent)
240{
241}
242
243QWidget *QScriptDebuggerLocalsItemDelegate::createEditor(
244 QWidget *parent, const QStyleOptionViewItem &option,
245 const QModelIndex &index) const
246{
247 QWidget *editor = QStyledItemDelegate::createEditor(parent, option, index);
248 if (index.column() == 1) {
249 // value
250 QLineEdit *le = qobject_cast<QLineEdit*>(editor);
251 if (le) {
252 QObject::connect(le, SIGNAL(textEdited(QString)),
253 this, SLOT(validateInput(QString)));
254 }
255 }
256 return editor;
257}
258
259bool QScriptDebuggerLocalsItemDelegate::eventFilter(QObject *watched, QEvent *event)
260{
261 QLineEdit *le = qobject_cast<QLineEdit*>(watched);
262 if (!le)
263 return QStyledItemDelegate::eventFilter(watched, event);
264
265 QScriptDebuggerLocalsWidget *localsWidget = qobject_cast<QScriptDebuggerLocalsWidget*>(parent());
266 Q_ASSERT(localsWidget != 0);
267 QScriptDebuggerLocalsWidgetPrivate *lvp =
268 reinterpret_cast<QScriptDebuggerLocalsWidgetPrivate*>(
269 QScriptDebuggerLocalsWidgetPrivate::get(localsWidget));
270
271 if ((event->type() == QEvent::FocusIn) && lvp->completingEditor) {
272 // because QLineEdit insists on being difficult...
273 return true;
274 }
275
276 if (event->type() != QEvent::KeyPress)
277 return QStyledItemDelegate::eventFilter(watched, event);
278 QKeyEvent *ke = static_cast<QKeyEvent*>(event);
279 if ((ke->key() == Qt::Key_Enter) || (ke->key() == Qt::Key_Return)) {
280#if QT_VERSION >= 0x040500
281 if (QScriptEngine::checkSyntax(le->text()).state() != QScriptSyntaxCheckResult::Valid) {
282 // ignore when script contains syntax error
283 return true;
284 }
285#endif
286 }
287 if (ke->key() != Qt::Key_Tab)
288 return QStyledItemDelegate::eventFilter(watched, event);
289
290 // trigger completion
291 lvp->complete(le);
292 return true;
293}
294
295void QScriptDebuggerLocalsItemDelegate::setModelData(
296 QWidget *editor, QAbstractItemModel *model,
297 const QModelIndex &index) const
298{
299#if QT_VERSION >= 0x040500
300 if (index.column() == 1) {
301 // check that the syntax is OK
302 QString expression = qobject_cast<QLineEdit*>(editor)->text();
303 if (QScriptEngine::checkSyntax(expression).state() != QScriptSyntaxCheckResult::Valid)
304 return;
305 }
306#endif
307 QStyledItemDelegate::setModelData(editor, model, index);
308}
309
310void QScriptDebuggerLocalsItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
311 const QModelIndex &index) const
312{
313 QStyledItemDelegate::paint(painter, option, index);
314#if 0
315 QModelIndex parent = index.parent();
316 if (parent.isValid()) {
317 QStyledItemDelegate::paint(painter, option, index);
318 } else {
319 // this is a top-level item.
320 const QTreeView *view = qobject_cast<const QTreeView*>(widget(option));
321 Q_ASSERT(view != 0);
322
323 QStyleOptionButton buttonOption;
324
325 buttonOption.state = option.state;
326#ifdef Q_WS_MAC
327 buttonOption.state |= QStyle::State_Raised;
328#endif
329 buttonOption.state &= ~QStyle::State_HasFocus;
330
331 buttonOption.rect = option.rect;
332 buttonOption.palette = option.palette;
333 buttonOption.features = QStyleOptionButton::None;
334 view->style()->drawControl(QStyle::CE_PushButton, &buttonOption, painter, view);
335
336 QStyleOption branchOption;
337 static const int i = 9; // ### hardcoded in qcommonstyle.cpp
338 QRect r = option.rect;
339 branchOption.rect = QRect(r.left() + i/2, r.top() + (r.height() - i)/2, i, i);
340 branchOption.palette = option.palette;
341 branchOption.state = QStyle::State_Children;
342
343 if (view->isExpanded(index))
344 branchOption.state |= QStyle::State_Open;
345
346 view->style()->drawPrimitive(QStyle::PE_IndicatorBranch, &branchOption, painter, view);
347
348 // draw text
349 QRect textrect = QRect(r.left() + i*2, r.top(), r.width() - ((5*i)/2), r.height());
350 QString text = elidedText(option.fontMetrics, textrect.width(), Qt::ElideMiddle,
351 index.data(Qt::DisplayRole).toString());
352 view->style()->drawItemText(painter, textrect, Qt::AlignCenter,
353 option.palette, view->isEnabled(), text);
354 }
355#endif
356}
357
358QScriptDebuggerLocalsWidget::QScriptDebuggerLocalsWidget(QWidget *parent)
359 : QScriptDebuggerLocalsWidgetInterface(*new QScriptDebuggerLocalsWidgetPrivate, parent, 0)
360{
361 Q_D(QScriptDebuggerLocalsWidget);
362 d->view = new QTreeView();
363 d->view->setItemDelegate(new QScriptDebuggerLocalsItemDelegate(this));
364 d->view->setEditTriggers(QAbstractItemView::DoubleClicked);
365// d->view->setEditTriggers(QAbstractItemView::NoEditTriggers);
366 d->view->setEditTriggers(QAbstractItemView::DoubleClicked | QAbstractItemView::SelectedClicked);
367 d->view->setAlternatingRowColors(true);
368 d->view->setSelectionBehavior(QAbstractItemView::SelectRows);
369 d->view->setSortingEnabled(true);
370 d->view->header()->setDefaultAlignment(Qt::AlignLeft);
371// d->view->header()->setSortIndicatorShown(true);
372// d->view->header()->setResizeMode(QHeaderView::ResizeToContents);
373
374 QVBoxLayout *vbox = new QVBoxLayout(this);
375 vbox->setMargin(0);
376 vbox->addWidget(d->view);
377}
378
379QScriptDebuggerLocalsWidget::~QScriptDebuggerLocalsWidget()
380{
381}
382
383/*!
384 \reimp
385*/
386QScriptDebuggerLocalsModel *QScriptDebuggerLocalsWidget::localsModel() const
387{
388 Q_D(const QScriptDebuggerLocalsWidget);
389 if (!d->proxy)
390 return 0;
391 return qobject_cast<QScriptDebuggerLocalsModel*>(d->proxy->sourceModel());
392}
393
394/*!
395 \reimp
396*/
397void QScriptDebuggerLocalsWidget::setLocalsModel(QScriptDebuggerLocalsModel *model)
398{
399 Q_D(QScriptDebuggerLocalsWidget);
400 if (localsModel()) {
401 QObject::disconnect(localsModel(), 0, d->view, 0);
402 }
403 if (model) {
404 QObject::connect(model, SIGNAL(scopeObjectAvailable(QModelIndex)),
405 this, SLOT(_q_expandIndex(QModelIndex)));
406 }
407 if (!d->proxy) {
408 d->proxy = new CustomProxyModel(this);
409 d->view->sortByColumn(0, Qt::AscendingOrder);
410 }
411 d->proxy->setSourceModel(model);
412 d->view->setModel(d->proxy);
413}
414
415/*!
416 \reimp
417*/
418void QScriptDebuggerLocalsWidget::expand(const QModelIndex &index)
419{
420 Q_D(QScriptDebuggerLocalsWidget);
421 d->view->expand(index);
422 d->view->setFirstColumnSpanned(index.row(), QModelIndex(), true);
423}
424
425QT_END_NAMESPACE
426
427#include "qscriptdebuggerlocalswidget.moc"
428
429#include "moc_qscriptdebuggerlocalswidget_p.cpp"
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